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Title: Structural Basis of Mycobacterium tuberculosis Transcription and Transcription Inhibition

Journal Article · · Molecular Cell
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [3];  [4];  [1];  [1]
  1. Rutgers Univ., Piscataway, NJ (United States)
  2. Rutgers Univ., Piscataway, NJ (United States); Chinese Academy of Sciences (CAS), Shanghai (China)
  3. Rutgers Univ., Newark, NJ (United States). New Jersey Medical School
  4. Rutgers Univ., Piscataway, NJ (United States); Katholieke Univ. Leuven (Belgium)

Mycobacterium tuberculosis (Mtb) is the causative agent of tuberculosis, which kills 1.8 million annually. Mtb RNA polymerase (RNAP) is the target of the first-line antituberculosis drug rifampin (Rif). We report crystal structures of Mtb RNAP, alone and in complex with Rif, at 3.8–4.4 Å resolution. The results identify an Mtb-specific structural module of Mtb RNAP and establish that Rif functions by a steric-occlusion mechanism that prevents extension of RNA. Furthermore, we also report non-Rif-related compounds—Nα-aroyl-N-aryl-phenylalaninamides (AAPs)—that potently and selectively inhibit Mtb RNAP and Mtb growth, and we report crystal structures of Mtb RNAP in complex with AAPs. AAPs bind to a different site on Mtb RNAP than Rif, exhibit no cross-resistance with Rif, function additively when co-administered with Rif, and suppress resistance emergence when co-administered with Rif.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH); Global Alliance for TB Drug Development
Grant/Contract Number:
GM041376; AI109713-8681
OSTI ID:
1368240
Journal Information:
Molecular Cell, Vol. 66, Issue 2; ISSN 1097-2765
Publisher:
Cell Press - ElsevierCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 98 works
Citation information provided by
Web of Science

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Screening of TB Actives for Activity against Nontuberculous Mycobacteria Delivers High Hit Rates journal August 2017
Co-inhibition as a strategic therapeutic approach to overcome rifampin resistance in tuberculosis therapy: atomistic insights journal July 2018
Closing and opening of the RNA polymerase trigger loop posted_content October 2019
Bifidobacterium adolescentis is intrinsically resistant to antitubercular drugs journal August 2018
Understanding molecular consequences of putative drug resistant mutations in Mycobacterium tuberculosis journal October 2018
Discovery, properties, and biosynthesis of pseudouridimycin, an antibacterial nucleoside-analog inhibitor of bacterial RNA polymerase journal November 2018
Mechanisms of antibiotics inhibiting bacterial RNA polymerase journal January 2019
Structures and mechanism of transcription initiation by bacterial ECF factors journal May 2019
Structural insights into the unique mechanism of transcription activation by Caulobacter crescentus GcrA journal March 2018
Identification and Characterization of Genetic Determinants of Isoniazid and Rifampicin Resistance in Mycobacterium tuberculosis in Southern India journal July 2019
Rifamycin congeners kanglemycins are active against rifampicin-resistant bacteria via a distinct mechanism journal October 2018
Opportunities for Overcoming Mycobacterium tuberculosis Drug Resistance: Emerging Mycobacterial Targets and Host-Directed Therapy journal June 2019
The Core and Holoenzyme Forms of RNA Polymerase from Mycobacterium smegmatis journal November 2018
Uncovering the Resistance Mechanism of Mycobacterium tuberculosis to Rifampicin Due to RNA Polymerase H451D/Y/R Mutations From Computational Perspective journal December 2019
Structural basis for transcription initiation by bacterial ECF σ factors journal March 2019
Structural basis of ECF-σ-factor-dependent transcription initiation journal February 2019
Role of Disputed Mutations in the rpoB Gene in Interpretation of Automated Liquid MGIT Culture Results for Rifampin Susceptibility Testing of Mycobacterium tuberculosis journal March 2018
Repositioning rifamycins for Mycobacterium abscessus lung disease journal June 2019
Computational Saturation Mutagenesis to predict structural consequences of systematic mutations on protein stability and rifampin interactions in the β subunit of RNA polymerase in Mycobacterium leprae posted_content June 2019
Structural Implications of Mutations Conferring Rifampin Resistance in Mycobacterium leprae. text January 2018
Identification and Characterization of Genetic Determinants of Isoniazid and Rifampicin Resistance in Mycobacterium tuberculosis in Southern India. journalarticle January 2019
Structural Implications of Mutations Conferring Rifampin Resistance in Mycobacterium leprae journal March 2018
Closing and opening of the RNA polymerase trigger loop journal June 2020
Identification and Characterization of Genetic Determinants of Isoniazid and Rifampicin Resistance in Mycobacterium tuberculosis in Southern India text January 2019
Structural basis for transcription inhibition by E. coli SspA journal August 2020